#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=5e5+50;
const int mod=1e9+7;
using namespace std;
int n,i,st[4*nmax],a[nmax],cur,tot,rs,j;
int tr(int x)
{
x+=n;
x%=n;
if(!x)x=n;
return x;
}
void upd(int x,int l,int r,int p,int v)
{
if(l==r)
{
st[x]=v;
return;
}
int mid=(l+r)/2;
if(p<=mid)upd(2*x,l,mid,p,v);
else upd(2*x+1,mid+1,r,p,v);
st[x]=max(st[2*x],st[2*x+1]);
}
int qry(int x,int l,int r,int tl,int tr)
{
if(tl>tr || tl>n || tr>n || tl<1 || tr<1)return 0;
if(l>tr || tl>r)return 0;
if(tl<=l && r<=tr)return st[x];
int mid=(l+r)/2;
return max(qry(2*x,l,mid,tl,tr),qry(2*x+1,mid+1,r,tl,tr));
}
int main()
{
//freopen("sol.in","r",stdin);
//freopen("sol.out","w",stdout);
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
cin>>n;
for(i=1;i<=n;i++)cin>>a[i],tot+=a[i];
for(i=1;i<=n/2;i++)cur+=a[i];
for(j=1;j<=n;j++,i++)
{
i=tr(i);
upd(1,1,n,j,cur);
cur-=a[tr(i-n/2)];
cur+=a[tr(i)];
}
for(i=1;i<=n;i++)
{
//cout<<i<<" "<<1<<" "<<i-n/2<<" "<<i+1<<" "<<tr(i-n/2)<<endl;
cur=qry(1,1,n,1,i-n/2);
if(i+1<=tr(i-n/2))cur=max(cur,qry(1,1,n,i+1,tr(i-n/2)));
else if(i+1>tr(i-n/2))cur=max(cur,max(qry(1,1,n,i+1,n),qry(1,1,n,1,tr(i-n/2))));
rs=max(rs,tot-cur);
}
cout<<rs<<endl;
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Correct |
2 ms |
376 KB |
Output is correct |
| 7 |
Correct |
2 ms |
376 KB |
Output is correct |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct |
| 9 |
Correct |
4 ms |
376 KB |
Output is correct |
| 10 |
Correct |
2 ms |
376 KB |
Output is correct |
| 11 |
Correct |
2 ms |
376 KB |
Output is correct |
| 12 |
Correct |
2 ms |
376 KB |
Output is correct |
| 13 |
Correct |
2 ms |
376 KB |
Output is correct |
| 14 |
Correct |
2 ms |
376 KB |
Output is correct |
| 15 |
Correct |
2 ms |
376 KB |
Output is correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| 17 |
Correct |
2 ms |
376 KB |
Output is correct |
| 18 |
Correct |
2 ms |
376 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Correct |
2 ms |
376 KB |
Output is correct |
| 7 |
Correct |
2 ms |
376 KB |
Output is correct |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct |
| 9 |
Correct |
4 ms |
376 KB |
Output is correct |
| 10 |
Correct |
2 ms |
376 KB |
Output is correct |
| 11 |
Correct |
2 ms |
376 KB |
Output is correct |
| 12 |
Correct |
2 ms |
376 KB |
Output is correct |
| 13 |
Correct |
2 ms |
376 KB |
Output is correct |
| 14 |
Correct |
2 ms |
376 KB |
Output is correct |
| 15 |
Correct |
2 ms |
376 KB |
Output is correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| 17 |
Correct |
2 ms |
376 KB |
Output is correct |
| 18 |
Correct |
2 ms |
376 KB |
Output is correct |
| 19 |
Correct |
2 ms |
376 KB |
Output is correct |
| 20 |
Correct |
2 ms |
376 KB |
Output is correct |
| 21 |
Correct |
3 ms |
376 KB |
Output is correct |
| 22 |
Correct |
3 ms |
376 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
4 ms |
376 KB |
Output is correct |
| 25 |
Correct |
4 ms |
376 KB |
Output is correct |
| 26 |
Correct |
5 ms |
504 KB |
Output is correct |
| 27 |
Correct |
2 ms |
376 KB |
Output is correct |
| 28 |
Correct |
2 ms |
376 KB |
Output is correct |
| 29 |
Correct |
2 ms |
376 KB |
Output is correct |
| 30 |
Correct |
4 ms |
504 KB |
Output is correct |
| 31 |
Correct |
4 ms |
476 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
0 ms |
376 KB |
Output is correct |
| 4 |
Correct |
46 ms |
1656 KB |
Output is correct |
| 5 |
Correct |
115 ms |
3192 KB |
Output is correct |
| 6 |
Correct |
149 ms |
3432 KB |
Output is correct |
| 7 |
Correct |
185 ms |
5624 KB |
Output is correct |
| 8 |
Correct |
314 ms |
6460 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
2 ms |
376 KB |
Output is correct |
| 3 |
Correct |
2 ms |
376 KB |
Output is correct |
| 4 |
Correct |
2 ms |
376 KB |
Output is correct |
| 5 |
Correct |
2 ms |
376 KB |
Output is correct |
| 6 |
Correct |
2 ms |
376 KB |
Output is correct |
| 7 |
Correct |
2 ms |
376 KB |
Output is correct |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct |
| 9 |
Correct |
4 ms |
376 KB |
Output is correct |
| 10 |
Correct |
2 ms |
376 KB |
Output is correct |
| 11 |
Correct |
2 ms |
376 KB |
Output is correct |
| 12 |
Correct |
2 ms |
376 KB |
Output is correct |
| 13 |
Correct |
2 ms |
376 KB |
Output is correct |
| 14 |
Correct |
2 ms |
376 KB |
Output is correct |
| 15 |
Correct |
2 ms |
376 KB |
Output is correct |
| 16 |
Correct |
2 ms |
376 KB |
Output is correct |
| 17 |
Correct |
2 ms |
376 KB |
Output is correct |
| 18 |
Correct |
2 ms |
376 KB |
Output is correct |
| 19 |
Correct |
2 ms |
376 KB |
Output is correct |
| 20 |
Correct |
2 ms |
376 KB |
Output is correct |
| 21 |
Correct |
3 ms |
376 KB |
Output is correct |
| 22 |
Correct |
3 ms |
376 KB |
Output is correct |
| 23 |
Correct |
5 ms |
376 KB |
Output is correct |
| 24 |
Correct |
4 ms |
376 KB |
Output is correct |
| 25 |
Correct |
4 ms |
376 KB |
Output is correct |
| 26 |
Correct |
5 ms |
504 KB |
Output is correct |
| 27 |
Correct |
2 ms |
376 KB |
Output is correct |
| 28 |
Correct |
2 ms |
376 KB |
Output is correct |
| 29 |
Correct |
2 ms |
376 KB |
Output is correct |
| 30 |
Correct |
4 ms |
504 KB |
Output is correct |
| 31 |
Correct |
4 ms |
476 KB |
Output is correct |
| 32 |
Correct |
2 ms |
376 KB |
Output is correct |
| 33 |
Correct |
2 ms |
376 KB |
Output is correct |
| 34 |
Correct |
0 ms |
376 KB |
Output is correct |
| 35 |
Correct |
46 ms |
1656 KB |
Output is correct |
| 36 |
Correct |
115 ms |
3192 KB |
Output is correct |
| 37 |
Correct |
149 ms |
3432 KB |
Output is correct |
| 38 |
Correct |
185 ms |
5624 KB |
Output is correct |
| 39 |
Correct |
314 ms |
6460 KB |
Output is correct |
| 40 |
Correct |
9 ms |
504 KB |
Output is correct |
| 41 |
Correct |
12 ms |
760 KB |
Output is correct |
| 42 |
Correct |
18 ms |
888 KB |
Output is correct |
| 43 |
Correct |
118 ms |
4088 KB |
Output is correct |
| 44 |
Correct |
313 ms |
8604 KB |
Output is correct |
| 45 |
Correct |
56 ms |
2168 KB |
Output is correct |
| 46 |
Correct |
182 ms |
7032 KB |
Output is correct |
| 47 |
Correct |
312 ms |
8860 KB |
Output is correct |
| 48 |
Correct |
311 ms |
8952 KB |
Output is correct |
| 49 |
Correct |
304 ms |
8056 KB |
Output is correct |
| 50 |
Correct |
304 ms |
7928 KB |
Output is correct |
